CN103273053B - A kind of slab caster tundish compound flow control Processes and apparatus - Google Patents
A kind of slab caster tundish compound flow control Processes and apparatus Download PDFInfo
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- CN103273053B CN103273053B CN201310233033.6A CN201310233033A CN103273053B CN 103273053 B CN103273053 B CN 103273053B CN 201310233033 A CN201310233033 A CN 201310233033A CN 103273053 B CN103273053 B CN 103273053B
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- flow control
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- river
- tundish
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Abstract
The invention discloses a kind of slab caster tundish compound flow control technique and equipment thereof, this technique comprises stopper rod flow control operational phase and submersed nozzle flow control stage, under the stopper rod flow control operational phase is applied in the low pulling rate state of conticaster, under the submersed nozzle flow control stage is applied in the normal pulling rate state of conticaster.This equipment comprises stopper and drives stopper to realize the stopper driver part moved up and down.The invention has the beneficial effects as follows: this technique tundish open for the first time water and unstable state production technology time adopt stopper rod flow control; After treating that conticaster is normally poured into a mould, stopper is risen to a high position, adopt the sizing cast of submersed nozzle, two kinds of technical process cooperatively interact and realize the cast of compound flow control, reduce stopper rod of tundish on the one hand and wash away erosion, improve the reliability of flow control, alleviate the water eroding and flooding of stopper caput on the other hand, reduce the beam causality loss caused out of control, improve tundish service life.The present invention has that equipment is simple, the advantage of small investment, easy to operate, tundish long service life.
Description
Technical field
The present invention relates to steel plate casting technology field, especially relate to a kind of conventional slab caster tundish compound air and stay technique and for completing the equipment that this technique designs.
Background technology
In the steel-making continuous casting of smelter is produced, molten steel forms strand by the after coagulation of ladle-tundish-crystallizer, and wherein, tundish is transition container, and realizing tundish beam stability contorting is the important process link that sheet slab continuous casting is produced.
Current known Slab Caster tundish casting method of flow control has sliding plate flow-control and stopper rod flow control two kinds, as sliding plate flow-control mode, because slide plate frequently opens and closes, slide plate serious wear, service life are shorter, very easily occur altering steel accident, therefore sheet slab casting machine generally adopts stopper rod flow control method.
Stopper rod flow control coordinates with filling pipe end the rim of a bowl mainly through stopper round end, and stopper runs unlatching up and down, closedown realizes molten steel and stablizes dirty.Its subject matter is corrode by molten steel, wash away equally; there is groove in stopper round end, filling pipe end the rim of a bowl surface, projection is difficult to ensure that steel stream is stablized; special production high manganese series (Mn > 1.2%) steel grade is more serious; very easily cause beam out of control; cause molten steel in mold emitting, by the generation of the production accidents such as forced-stopping machine, having a strong impact on tundish work life and there is certain potential safety hazard.
Summary of the invention
The object of the invention is to overcome the defect existed in prior art, a kind of tundish compound flow control Processes and apparatus that can realize the cast of tundish sizing is provided, the technical scheme adopted is: a kind of slab caster tundish compound flow control technique, it is characterized in that: described compound flow control technique comprises stopper rod flow control operational phase and submersed nozzle flow control stage, under the described stopper rod flow control operational phase is applied in the low pulling rate state of described conticaster, under the described submersed nozzle flow control stage is applied in the normal pulling rate state of conticaster.
Technical characteristic of the present invention also has: described lower-speed state comprises tundish and opens for the first time and water and conticaster work unsteady state.
Technical characteristic of the present invention also has: the described stopper rod flow control operational phase refers to that stopper caput and filling pipe end align, and is mentioned, declines and close the control that stifled described filling pipe end completes steel stream size by stopper rising.
Technical characteristic of the present invention also has: the described submersed nozzle flow control stage refers to that the mouth of a river slide block internal diameter of submersed nozzle is less than filling pipe end internal diameter, is poured into a mould by the sizing of the control realization Metal in Tundish to mouth of a river slide block internal diameter.
Technical scheme of the present invention also has: a kind of slab caster tundish compound flow control process equipment, it is characterized in that: described equipment comprises stopper part and submersed nozzle part, described stopper part comprises stopper and drives stopper to realize the stopper driver part moved up and down, the filling pipe end that described submersed nozzle part comprises mouth of a river body, is positioned at the mouth of a river slide plate above the body of the mouth of a river and is positioned at above the slide plate of the mouth of a river, mouth of a river slide plate diameter of bore is less than mouth of a river body diameter of bore.
Technical scheme of the present invention also has: described stopper driver part comprises lift, crane cross by elevator drives, and described stopper is arranged in crane cross.
Technical scheme of the present invention also has: described filling pipe end has variable-diameter inner hole, and the internal diameter of described variable-diameter inner hole near slide plate one end, the mouth of a river is greater than mouth of a river slide plate bore inner diameter, and described variable-diameter inner hole matches with described stopper caput away from one end of mouth of a river slide plate.
The invention has the beneficial effects as follows: this technique tundish open for the first time water and unstable state production technology time adopt stopper rod flow control; After treating that conticaster is normally poured into a mould, stopper is risen to a high position, adopt the sizing cast of submersed nozzle, two kinds of technical process cooperatively interact and realize the cast of compound flow control, reduce stopper rod of tundish on the one hand and wash away erosion, improve the reliability of flow control, alleviate the water eroding and flooding of stopper caput on the other hand, reduce the beam causality loss caused out of control, improve tundish service life.The present invention has that equipment is simple, the advantage of small investment, easy to operate, tundish long service life.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present invention, and accompanying drawing 2 is immersion type water nozzle structure schematic diagrames, and wherein 1 is the outer box hat of mouth of a river slide plate, 2 is mouth of a river slide plate endoporus, and 3 is mouth of a river slide plates, and 4 is mouth of a river body endoporus, 5 is mouth of a river bodies, and 6 is stoppers, and 7 is crane cross, 8 is lifts, 9 is stopper caputs, and 10 is filling pipe ends, and 11 is tundish, 12 is crystallizers, and 13 is molten steel.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is specifically described.The invention discloses a kind of slab caster tundish compound flow control technique, this compound flow control technique comprises stopper rod flow control operational phase and submersed nozzle flow control stage, under wherein the stopper rod flow control operational phase is applied in the low pulling rate state of conticaster, namely tundish is opened for the first time and is watered and conticaster work unsteady state, and under the submersed nozzle flow control stage is applied in the normal pulling rate state of conticaster.The stopper rod flow control operational phase refers to that stopper caput 9 and filling pipe end 10 align, and is mentioned, declining to closing blocks the control that the mouth of a river 10 completes steel stream size by stopper 6 rising.The submersed nozzle flow control stage refers to that mouth of a river slide block 3 internal diameter of submersed nozzle is less than the internal diameter of filling pipe end 10, is poured into a mould by the sizing of the control realization Metal in Tundish to mouth of a river slide block 3 internal diameter.
The invention also discloses slab caster tundish compound flow control process equipment, this equipment comprises stopper part and submersed nozzle part, wherein stopper part comprises stopper 6 and drives stopper 6 to realize the stopper driver part moved up and down, the filling pipe end 10 that submersed nozzle part comprises mouth of a river body 5, is positioned at the mouth of a river slide plate 3 above mouth of a river body 5 and is positioned at above the slide plate of the mouth of a river, mouth of a river slide plate endoporus 2 diameter is less than mouth of a river body 5 diameter of bore.Filling pipe end 10 has variable-diameter inner hole, and the internal diameter of variable-diameter inner hole near mouth of a river slide plate 3 one end is greater than mouth of a river slide plate endoporus 2 internal diameter, and variable-diameter inner hole matches with stopper caput 9 away from one end of mouth of a river slide plate 3.The crane cross 7 that stopper driver part comprises lift 8, driven by lift 8, stopper to be arranged in crane cross 7 and to move up and down, to realize the flow control of tundish 11 under it drives.
During installation, stopper caput 9 and filling pipe end 10 the rim of a bowl align, risen by stopper 6 mention, decline pass blocks the mouth of a river 10 and controls steel stream size.
The beam cast of tundish 11: submersed nozzle is in place, first time opens and waters, lift 8 lifting crane cross 7, control gap length between stopper caput 9 and filling pipe end 10, control molten steel 13 and slowly inject crystallizer 12, treat that conticaster pulling rate reaches and normally pour into a mould pulling rate (novel mouth of a river design pulling rate), slow lifting stopper 6 is to high-order, by the control of mouth of a river slide block diameter of bore, steel stream is stablized, realize the sizing cast of molten steel 13 in tundish 11, thus realize conticaster constant speed and draw steel; When conticaster process abnormality is lower than normal cast pulling rate, then need to enable the operation of stopper 6 flow control.By stopper 6 and mouth of a river body 5 with the use of, tundish compound flow control can be realized, make slab caster administration measure.
Certainly, above-mentioned explanation is not limitation of the present invention, and the present invention is also not limited only to above-mentioned citing, and the change that those skilled in the art make in essential scope of the present invention, remodeling, interpolation or replacement, also belong to protection scope of the present invention.
Claims (4)
1. a slab caster tundish compound flow control technique, it is characterized in that: described compound flow control technique comprises stopper rod flow control operational phase and submersed nozzle flow control stage, under the described stopper rod flow control operational phase is applied in the low pulling rate state of described conticaster, under the described submersed nozzle flow control stage is applied in the normal pulling rate state of conticaster; Described lower-speed state comprises tundish and opens for the first time and water and conticaster work unsteady state; The described stopper rod flow control operational phase refers to that stopper caput and filling pipe end align, and is mentioned, declines and close the control that stifled described filling pipe end completes steel stream size by stopper rising; The described submersed nozzle flow control stage refers to that the mouth of a river slide block internal diameter of submersed nozzle is less than filling pipe end internal diameter, is poured into a mould by the sizing of the control realization Metal in Tundish to mouth of a river slide block internal diameter.
2. a slab caster tundish compound flow control process equipment, it is characterized in that: described equipment comprises stopper part and submersed nozzle part, described stopper part comprises stopper and drives stopper to realize the stopper driver part moved up and down, the filling pipe end that described submersed nozzle part comprises mouth of a river body, is positioned at the mouth of a river slide plate above the body of the mouth of a river and is positioned at above the slide plate of the mouth of a river, mouth of a river slide plate diameter of bore is less than mouth of a river body diameter of bore.
3. according to slab caster tundish compound flow control process equipment according to claim 2, it is characterized in that: described stopper driver part comprises lift, crane cross by elevator drives, and described stopper is arranged in crane cross.
4. according to slab caster tundish compound flow control process equipment according to claim 3, it is characterized in that: described filling pipe end has variable-diameter inner hole, the internal diameter of described variable-diameter inner hole near slide plate one end, the mouth of a river is greater than mouth of a river slide plate bore inner diameter, and described variable-diameter inner hole matches with stopper caput away from one end of mouth of a river slide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310233033.6A CN103273053B (en) | 2013-06-13 | 2013-06-13 | A kind of slab caster tundish compound flow control Processes and apparatus |
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| CN201310233033.6A CN103273053B (en) | 2013-06-13 | 2013-06-13 | A kind of slab caster tundish compound flow control Processes and apparatus |
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| CN103273053B true CN103273053B (en) | 2016-02-03 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615900B (en) * | 2013-10-26 | 2016-01-20 | 芜湖新兴铸管有限责任公司 | For the volume control device of induction furnace operating mine slag wool, rock wool, devitrified glass, cast stone series products |
| CN103769569A (en) * | 2014-02-17 | 2014-05-07 | 河南省宏达炉业有限公司 | Flow control device and method for continuous casting tundish |
| CN105710356A (en) * | 2016-04-29 | 2016-06-29 | 江苏锡华铸造有限公司 | Quantitative casting system for casting |
| CN109396410A (en) * | 2017-08-18 | 2019-03-01 | 江苏奥能耐火材料有限公司 | A kind of continuous casting current stabilization mouth of a river and preparation method thereof |
| CN114042905A (en) * | 2021-10-27 | 2022-02-15 | 重庆钢铁股份有限公司 | Operation method for replacing sliding block under automatic liquid level control |
| CN114799147B (en) * | 2022-05-16 | 2024-05-31 | 承德建龙特殊钢有限公司 | Tundish stopper mechanism of continuous casting machine, control system device and control method |
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| CN102825229A (en) * | 2012-08-24 | 2012-12-19 | 中冶南方工程技术有限公司 | Flow control structure for preventing vortexes from being generated in tundish |
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2013
- 2013-06-13 CN CN201310233033.6A patent/CN103273053B/en not_active Expired - Fee Related
Patent Citations (10)
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|---|---|---|---|---|
| JPH06339757A (en) * | 1993-05-31 | 1994-12-13 | Nippon Steel Corp | Sliding nozzle device in continuous caster |
| JPH0857600A (en) * | 1994-08-18 | 1996-03-05 | Sumitomo Metal Ind Ltd | Method for opening nozzle hole of tundish for continuous casting and continuous casting method and float type slag stopper device |
| JPH09155535A (en) * | 1995-11-30 | 1997-06-17 | Nkk Corp | Hole force opening method for molten metal outflow hole and hole force opening device therefor |
| JPH10296406A (en) * | 1997-04-28 | 1998-11-10 | Nippon Steel Corp | Stopper rod for continuous casting |
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Granted publication date: 20160203 Termination date: 20170613 |